Thick plate steel rolling process capable of transferring steel in advance and transferred steel conveying device and method of thick plate steel rolling process

Abstract

The invention discloses a thick plate steel rolling process capable of transferring steel in advance and a transferred steel conveying device and method thereof, and belongs to the technical field of steel rolling metallurgical industry. The thick plate rotating steel conveying device comprises a conveying roller way, and the conveying roller way is composed of a roller way set A and a roller way set B which are oppositely connected. According to the thick plate conveying device capable of rotating steel in advance, by adopting the grouping arrangement of the group A roller way and the group B roller way, the purpose of rotating steel in advance can be achieved only by controlling the rotating directions of the group A roller way and the group B roller way, large transformation of mechanical equipment is not needed, the cost is reduced, and meanwhile the diagonal value formed by the received length and width of a steel plate is calculated through the host; whether the head of the blank is in front of the B group roller way is judged, and when the diagonal value of the steel plate is smaller than the width of the transmission track of the rolling mill and the head of the blank is in front of the B group roller way, the B group roller way adopts a reverse rotation mode to align the steel plate, so that the problem that the steel plate is inclined when entering the rolling mill can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steel rolling metallurgy industry, and in particular to a thick plate steel rolling process with early steel transfer and a steel transfer conveying device and method thereof. Background Art

[0002] Steel plate is a flat steel material that is cast by molten steel and pressed after cooling. It is flat and rectangular and can be directly rolled or cut from wide steel strip.

[0003] For example, in the working process of wide and thick plate reversible rolling mill, the horizontal and vertical rolling mode of the billet is an effective rolling strategy that takes into account both production efficiency and dimensional accuracy control, so it has been widely used. However, with the increasing demand for increasing rolling rhythm, due to the heavy steel plates, conveyor rollers are usually used for transportation. The industry often uses steel plate transfer adjustment before the rolling mill to prevent the steel plates from tilting. At present, most steel plate factories use the method of replacing the flat rollers of the entire set of conveyor rollers with conical rollers to achieve the purpose of early steel transfer, thereby saving one pass of steel transfer time, but not all steel plates require steel transfer in the first pass.

[0004] When a conical roller is used as the conveying roller for the existing steel plate conveyor, the roller surface is easily worn due to the conical roller having a thick structure at one end and a thin structure at the other end. In addition, the steel plate is easily tilted and hits the edge guardrail of the roller, resulting in damage to the conveyor roller or the steel plate is stuck and cannot work normally. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a thick plate rolling process with early steel rotation and a steel rotation and conveying device and method thereof, which can achieve the technical effect of early steel plate rotation and reduce roller wear.

[0006] In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented through the following technical solutions: The technical scheme of the present invention is: a thick plate steel transfer conveying device, comprising a conveying roller, the conveying roller is composed of two relatively connected group A rollers and group B rollers, the front side of the conveying roller is provided with a first motor group driving the group A rollers to rotate clockwise, the front side of the conveying roller is provided with a second motor group capable of adjusting the rotation direction of the group B rollers, the top of the conveying roller is provided with a support frame located above the group A rollers and the group B rollers, the lower surface of the support frame is provided with a camera assembly capable of collecting working images, and the rear side of the conveying roller is provided with a rotation switch capable of starting and stopping the conveying rollers; The camera assembly, the first motor group and the second motor group are all connected to the host device through signal lines.

[0007] A method for a thick plate steel transfer device comprises the following steps: S301, installing roller tables and dividing them into group A roller tables and group B roller tables; S302, adjusting the direction, the rotation direction of the rollers of group B is opposite to the rotation direction of the rollers of group A; S303, loading the material from the roller table of group A and conveying it toward the rolling mill; S304, determine the position, the camera assembly collects images, the host calculates the diagonal value of the steel plate, and determines whether the head of the steel plate is in front of the roller table of group B; S305, adjusting the steering direction, adjusting the rotation direction of the rollers of group B according to the diagonal of the steel plate; S306, adjusting the angle, the rollers of group B rotate in the opposite direction, and the angle of the steel plate returns to the normal position; S307, after the secondary turning and the steel plate returning to the center, the rotation direction of the rollers of group B is the same as that of group A; S308, the rolling mill is loaded, and after the steel plate is straightened, it is continuously transported to the rolling mill by rollers of group B after adjustment.

[0008] Furthermore, in step S301, the conveyor rollers are installed at the loading port of the rolling mill and are divided into group A rollers and group B rollers.

[0009] Furthermore, in step S302, the rollers of group A are driven to rotate by a unidirectional asynchronous motor, and the rollers of group B are driven to rotate by a bidirectional asynchronous motor. It is preset that the rotation directions of the rollers of group B and group A are opposite.

[0010] Furthermore, in step S304, the steel plate is placed on roller conveyor group A, the camera assembly takes a picture, and sends the picture data to the host. After the host receives the picture, the secondary calculation model in the host calculates the diagonal value formed by the length and width of the steel plate to determine whether the head of the blank is in front of roller conveyor group B.

[0011] Furthermore, in step S305, when the diagonal value of the steel plate is smaller than the driving track width of the rolling mill and the head of the billet is in front of the roller table of group B, the host determines that the current state needs to be adjusted, and the host controls the roller table of group B to adopt the reverse mode.

[0012] Furthermore, in step S305, when the diagonal value of the steel plate is greater than the transmission track width of the rolling mill or the head of the billet is not in front of group B rollers, the main engine determines that the current state does not require adjustment, and the main engine controls group B rollers to have the same direction as group A rollers to feed the steel plate into the rolling mill.

[0013] Furthermore, in step S306, according to the different rotation directions of group A rollers and group B rollers, when one side of the steel plate contacts group B rollers, the main machine adjusts the roller speed to 1m / s. The rotation directions of group A rollers and group B rollers are different, and the steel plate is adjusted to the center.

[0014] Furthermore, in step S307, after the steel plate is straightened, the main machine controls the direction of the rollers of group B to change so that the rotation direction of the rollers of group B is the same as that of the rollers of group A for continuing to load materials.

[0015] A thick plate rolling process with early steel conversion comprises the following steps: S1. Steel is discharged from the heating furnace. The steel billet is heat treated by the heating furnace and then discharged. The heat treated steel plate is transported by a common roller. S2, slab dephosphorization, the steel plate is transported to the dephosphorization equipment by ordinary rollers for dephosphorization treatment; S3, steel transfer adjustment, using the thick plate steel transfer conveying device to perform operations of the method of the thick plate steel transfer conveying device; S4, rolling the steel plate, the steel plate after steel transfer enters the rolling mill for rolling; S5. Cooling the steel. The rolled steel plate enters the cooling device and can be cooled by water or air to cool the steel as quickly as possible. S6, steel cutting, the cooled steel plate is cut according to the different specifications and sizes produced; S7, print number, print code on the cut steel plate; S8. Inspection and warehousing: The finished steel plates are inspected in batches, and those that meet the standards are put into storage.

[0016] The beneficial technical effect of the present invention is as follows: by adopting the group setting of rollers A and B, after the steel plate is placed on rollers A, different steering designs are adopted and pictures are collected by camera components. Then, the host calculates the diagonal value formed by the length and width of the received steel plate to judge whether the head of the billet is in front of rollers B. When the diagonal value of the steel plate is less than the transmission track width of the rolling mill and the head of the billet is in front of rollers B, rollers B adopt the reversal mode to return the steel plate to the right position, so that the problem of the steel plate going slanting when entering the rolling mill can be avoided, thereby eliminating the need for frequent maintenance by staff. While greatly improving the production efficiency of the steel plate, the device can achieve the purpose of early steel transfer by simply controlling the rotation direction of rollers A and B, without the need for major transformation of mechanical equipment, thus reducing costs, and without the need to use tapered rollers as conveying rollers, thus avoiding the problem that the tapered roller is a structure that is thick at one end and thin at the other end, which is easy to cause wear of the roller surface and easy to cause the steel plate to go slanting and hit the edge guardrail surface of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a top view of the structure of a thick plate steel transfer conveying device of the present invention; Figure 2 It is a schematic cross-sectional side view of the structure of a thick plate steel transfer conveying device of the present invention; Figure 3 It is a schematic flow chart of a method of a thick plate steel transfer conveying device according to the present invention; Figure 4 It is a schematic flow diagram of a thick plate rolling process with early steel conversion according to the present invention.

[0018] The numbers and letters in the figure represent the corresponding component names: 1. Conveyor roller; 2. Support frame; 21. Camera assembly; 3. Rotary switch; 4. First motor group; 5. Second motor group. DETAILED DESCRIPTION

[0019] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] See attached Figure 1-2 As shown, the thick plate conveying device for early steel transfer of embodiment 1 includes a conveying roller 1, and the conveying roller 1 consists of two relatively connected group A rollers and group B rollers. The front side of the conveying roller 1 is provided with a first motor group 4 for driving the group A rollers to rotate clockwise, and the front side of the conveying roller 1 is provided with a second motor group 5 capable of adjusting the rotation direction of the group B rollers. A support frame 2 is provided on the top of the conveying roller 1 and above the group A rollers and the group B rollers, and a camera assembly 21 capable of collecting working images is provided on the lower surface of the support frame 2.

[0021] The A group of rollers is the loading part of the conveyor roller 1, and the B group of rollers is the feeding part of the conveyor roller 1. After the steel plate passes through the A group of rollers and rotates back to the B group of rollers, the B group of rollers continues to convey the steel plate until it reaches the feeding port of the rolling mill.

[0022] The width of the conveyor roller 1 is preferably a 5-meter conveyor roller of a rolling mill, and the diagonal value of the steel plate cannot be greater than 4.75 meters, so as to leave enough space for the steel plate to rotate back to the center.

[0023] When the steel plate is placed on group A rollers, the camera assembly 21 collects the specifications of the steel plate, allowing the host to calculate. When the diagonal value of the steel plate is smaller than the transmission track width of the rolling mill and the head of the billet is in front of group B rollers, group B rollers adopt the reverse mode.

[0024] When the diagonal value of the steel plate is greater than the driving track width of the rolling mill or the head of the billet is not in front of the B group of rollers, the B group of rollers will have the same direction as the A group of rollers and directly feed the steel plate into the rolling mill.

[0025] A rotary switch 3 capable of starting and stopping the conveyor roller 1 is arranged on the rear side of the conveyor roller 1. The rotary switch 3 is a two-way switch, that is, no matter whether the operator pulls the rocker switch forward or reversely, the steel plate is transported to the rolling mill, so as to maintain the inertia of the billet being transported forward, while retaining the original operating habits of the operator, so as to achieve the purpose of steel transfer and increase the operating convenience of the staff.

[0026] The camera assembly 21, the first motor group 4 and the second motor group 5 are all connected to the host device through signal lines.

[0027] The camera assembly 21, the first motor group 4 and the second motor group 5 can be started and stopped by the host device, and the operator can directly select whether to use the function key for early steel plate transfer in the HMI screen on the host.

[0028] Furthermore, group A rollers are composed of seven unidirectional rollers, and the first motor group 4 is provided with a unidirectional asynchronous motor for driving the seven unidirectional rollers to rotate, group B rollers are composed of seven synchronous rollers, and the second motor group 5 is provided with a bidirectional asynchronous motor for driving the seven synchronous rollers to rotate.

[0029] The bidirectional asynchronous motor can control the direction of the rollers of group B, so that the rollers of group B can rotate in the same direction or in the opposite direction as the rollers of group A according to the needs.

[0030] See attached Figure 3 As shown, a method for thick plate steel transfer device comprises the following steps: S301, installing roller tables and dividing them into group A roller tables and group B roller tables; S302, adjusting the direction, the rotation direction of the rollers of group B is opposite to the rotation direction of the rollers of group A; S303, loading the material from the roller table of group A and conveying it toward the rolling mill; S304, determine the position, the camera assembly 21 collects images, and the host calculates the diagonal value of the steel plate to determine whether the head of the steel plate is in front of the roller table of group B; S305, adjusting the steering direction, adjusting the rotation direction of the rollers of group B according to the diagonal of the steel plate; S306, adjusting the angle, the rollers of group B rotate in the opposite direction, and the angle of the steel plate returns to the normal position; S307, after the secondary turning and the steel plate returning to the center, the rotation direction of the rollers of group B is the same as that of group A; S308, the rolling mill is loaded, and after the steel plate is straightened, it is continuously transported to the rolling mill by rollers of group B after adjustment.

[0031] Furthermore, in step S301, the conveyor rollers are installed at the loading port of the rolling mill and are divided into group A rollers and group B rollers.

[0032] Furthermore, in step S302, the rollers of group A are driven to rotate by a unidirectional asynchronous motor, and the rollers of group B are driven to rotate by a bidirectional asynchronous motor. It is preset that the rotation directions of the rollers of group B and group A are opposite.

[0033] Furthermore, in step S304, the steel plate is placed on roller conveyor group A, the camera assembly takes a picture, and sends the picture data to the host. After the host receives the picture, the secondary calculation model in the host calculates the diagonal value formed by the length and width of the steel plate to determine whether the head of the blank is in front of roller conveyor group B.

[0034] Furthermore, in step S305, when the diagonal value of the steel plate is smaller than the driving track width of the rolling mill and the head of the billet is in front of the roller table of group B, the host determines that the current state needs to be adjusted, and the host controls the roller table of group B to adopt the reverse mode.

[0035] Furthermore, in step S305, when the diagonal value of the steel plate is greater than the transmission track width of the rolling mill or the head of the billet is not in front of group B rollers, the main engine determines that the current state does not require adjustment, and the main engine controls group B rollers to have the same direction as group A rollers to feed the steel plate into the rolling mill.

[0036] Furthermore, in step S306, according to the different rotation directions of group A rollers and group B rollers, when one side of the steel plate contacts group B rollers, the main machine adjusts the roller speed to 1m / s. The rotation directions of group A rollers and group B rollers are different, and the steel plate is adjusted to the center.

[0037] Furthermore, in step S307, after the steel plate is straightened, the main machine controls the direction of the rollers of group B to change so that the rotation direction of the rollers of group B is the same as that of the rollers of group A for continuing to load materials.

[0038] The method achieves the purpose of early steel rotation by using the first motor group 4 and the second motor group 5 to control the rotation direction of the rollers of group A and group B, and replaces the use of tapered rollers as conveying rollers. Since the tapered rollers are thick at one end and thin at the other end, it is easy to cause wear on the roller surface and easily cause the steel plates to go off-center and hit the edge guardrail surface of the rollers, resulting in damage to the conveying rollers, or the steel plates are stuck and cannot work normally. In addition, it is beneficial to improve the production efficiency of steel plates while avoiding major modifications of mechanical equipment and reducing costs.

[0039] See attached Figure 4 As shown, a thick plate rolling process with early steel conversion includes the following steps: S1. Steel is discharged from the heating furnace. The steel billet is heat treated by the heating furnace and then discharged. The heat treated steel plate is transported by a common roller. S2, slab dephosphorization, the steel plate is transported to the dephosphorization equipment by ordinary rollers for dephosphorization treatment; S3, steel transfer adjustment, using the thick plate steel transfer conveying device, performing the operation of the method of the thick plate steel transfer conveying device; S4, rolling the steel plate, the steel plate after steel transfer enters the rolling mill for rolling; S5. Cooling the steel. The rolled steel plate enters the cooling device and can be cooled by water or air to cool the steel as quickly as possible. S6, steel cutting, the cooled steel plate is cut according to the different specifications and sizes produced; S7, print number, print code on the cut steel plate; S8. Inspection and warehousing: The finished steel plates are inspected in batches, and those that meet the standards are put into storage.

[0040] Advance steel turning before rolling steel plates can achieve the effect of advancing the straightening of steel plates.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A thick plate steel transfer conveying device, characterized in that: The conveyor roller (1) comprises two rollers of group A and group B connected relatively to each other, a first motor group (4) for driving the rollers of group A to rotate clockwise is arranged at the front side of the conveyor roller (1), a second motor group (5) for adjusting the rotation direction of the rollers of group B is arranged at the front side of the conveyor roller (1), a support frame (2) is arranged at the top of the conveyor roller (1) and above the rollers of group A and group B, a camera assembly (21) for collecting working images is arranged on the lower surface of the support frame (2), and a rotation switch (3) for starting and stopping the conveyor roller (1) is arranged at the rear side of the conveyor roller (1); The camera assembly (21), the first motor group (4) and the second motor group (5) are all connected to the host device through signal lines.

2. A method for thick plate steel transfer conveying device as claimed in claim 1, characterized in that: The following steps are involved: S301, installing roller tables and dividing them into group A roller tables and group B roller tables; S302, adjusting the direction. The rotation direction of the rollers of group B is opposite to that of the rollers of group A. The rollers of group A are driven to rotate by a unidirectional asynchronous motor, and the rollers of group B are driven to rotate by a bidirectional asynchronous motor. The rotation directions of the rollers of group B and group A are preset to be opposite. S303, loading the material from the roller table of group A and conveying it toward the rolling mill; S304, determining the position, the camera assembly (21) collects images, and the host calculates the diagonal value of the steel plate to determine whether the head of the steel plate is in front of the roller table of group B; S305, adjusting the steering direction, adjusting the rotation direction of the rollers of group B according to the diagonal of the steel plate; S306, adjusting the angle, the rollers of group B rotate in the opposite direction, and the angle of the steel plate returns to the normal position; S307, after the secondary turning and the steel plate returning to the center, the rotation direction of the rollers of group B is the same as that of group A; S308, the rolling mill is loaded with materials. After the steel plate is aligned, it is continuously transported to the rolling mill by the rollers of group B after adjustment. According to the different rotation directions of the rollers of group A and group B, when one side of the steel plate contacts the rollers of group B, the main machine adjusts the roller speed to 1m / s. The rotation directions of the rollers of group A and group B are different, and the steel plate is aligned.

3. The method of thick plate steel transfer conveying device according to claim 2, characterized in that: In step S301, the conveyor roller table (1) is installed at the loading port of the rolling mill and is divided into a group A roller table and a group B roller table.

4. The method of thick plate steel transfer conveying device according to claim 2, characterized in that: In step S304, the steel plate is placed on roller conveyor group A, and the camera assembly (21) takes a picture and sends the picture data to the host. After the host receives the picture, the secondary calculation model in the host calculates the diagonal value formed by the length and width of the steel plate to determine whether the head of the blank is in front of roller conveyor group B.

5. The method of thick plate steel transfer conveying device according to claim 2, characterized in that: In step S305, when the diagonal value of the steel plate is smaller than the driving track width of the rolling mill and the head of the billet is in front of the roller table of group B, the host determines that the current state needs to be adjusted, and the host controls the roller table of group B to adopt the reverse mode.

6. The method of thick plate steel transfer conveying device according to claim 2, characterized in that: In step S305, when the diagonal value of the steel plate is greater than the transmission track width of the rolling mill or the head of the billet is not in front of the group B rollers, the host determines that the current state does not require adjustment, and then the host controls the group B rollers to have the same direction as the group A rollers to feed the steel plate into the rolling mill.

7. The method of thick plate steel transfer conveying device according to claim 2, characterized in that: In step S307, after the steel plate is straightened, the main machine controls the direction of the rollers of group B to change so that the rotation direction of the rollers of group B is the same as that of the rollers of group A for continuing to load materials.

8. A thick plate rolling process with early steel conversion, characterized in that: The following steps are involved: S1. Steel is discharged from the heating furnace. The steel billet is heat treated by the heating furnace and then discharged. The heat treated steel plate is transported by a common roller. S2, slab dephosphorization, the steel plate is transported to the dephosphorization equipment by ordinary rollers for dephosphorization treatment; S3, steel transfer adjustment, using the thick plate steel transfer conveying device as claimed in claim 1, performing the operation of the method of the thick plate steel transfer conveying device as claimed in any one of claims 2 to 7; S4, rolling the steel plate, the steel plate after steel transfer enters the rolling mill for rolling; S5. Cooling the steel. The rolled steel plate enters the cooling device and can be cooled by water or air to cool the steel as quickly as possible. S6, steel cutting, the cooled steel plate is cut according to the different specifications and sizes produced; S7, print number, print code on the cut steel plate; S8. Inspection and warehousing: The finished steel plates are inspected in batches, and those that meet the standards are put into storage.

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